Above: Articulated Mammoth found in the upper clay layers; called the "Clay Mammoth."

A Mammoth Waste of Time

In this slide show, have a look at what a single chunk of dung revealed about its maker as well as about the mammoth's diet, habitat, even the climate in which it lived 22,000 years ago.

Racing to the scene, scientists from the local Denver museum could scarcely believe what they found: a vast trove of fossils from the depths of the Ice Age 100,000 years ago, when North America teemed with incredible beasts: massive mastodons, saber tooth cats and camels, giant bison with six-foot horns, and ground sloths as big as elephants with huge claws.

Packed with ingenious scientific work and spectacular fossils, NOVA's "Ice Age Death Trap" reveals intimate secrets of the life and death of North America's most exotic and extreme creatures.

Most tantalizing of all, the team unearths startling and controversial evidence of what may be the earliest humans ever to venture into the untamed wilderness of Ice Age America.